EP0372149B1 - Vorrichtung und Verfahren zum Zerkleinern von Mineralfeststoffen in kleine Teilchen und Verfahren zum Sortieren von Mineralfeststoffteilchen nach Grösse - Google Patents

Vorrichtung und Verfahren zum Zerkleinern von Mineralfeststoffen in kleine Teilchen und Verfahren zum Sortieren von Mineralfeststoffteilchen nach Grösse Download PDF

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Publication number
EP0372149B1
EP0372149B1 EP89104643A EP89104643A EP0372149B1 EP 0372149 B1 EP0372149 B1 EP 0372149B1 EP 89104643 A EP89104643 A EP 89104643A EP 89104643 A EP89104643 A EP 89104643A EP 0372149 B1 EP0372149 B1 EP 0372149B1
Authority
EP
European Patent Office
Prior art keywords
fragments
mineral material
solid mineral
pieces
rotor
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP89104643A
Other languages
English (en)
French (fr)
Other versions
EP0372149A3 (de
EP0372149A2 (de
Inventor
Mitsuru Kawaguchi
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Kotobuki Engineering and Manufacturing Co Ltd
Original Assignee
Kotobuki Engineering and Manufacturing Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Kotobuki Engineering and Manufacturing Co Ltd filed Critical Kotobuki Engineering and Manufacturing Co Ltd
Publication of EP0372149A2 publication Critical patent/EP0372149A2/de
Publication of EP0372149A3 publication Critical patent/EP0372149A3/de
Application granted granted Critical
Publication of EP0372149B1 publication Critical patent/EP0372149B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
    • B04B—CENTRIFUGES
    • B04B3/00—Centrifuges with rotary bowls in which solid particles or bodies become separated by centrifugal force and simultaneous sifting or filtering
    • B04B3/06—Centrifuges with rotary bowls in which solid particles or bodies become separated by centrifugal force and simultaneous sifting or filtering discharging solid particles by vibrating the bowl
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C19/00—Other disintegrating devices or methods
    • B02C19/16—Mills provided with vibrators
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C13/00—Disintegrating by mills having rotary beater elements ; Hammer mills
    • B02C13/14—Disintegrating by mills having rotary beater elements ; Hammer mills with vertical rotor shaft, e.g. combined with sifting devices
    • B02C13/18—Disintegrating by mills having rotary beater elements ; Hammer mills with vertical rotor shaft, e.g. combined with sifting devices with beaters rigidly connected to the rotor
    • B02C13/1807—Disintegrating by mills having rotary beater elements ; Hammer mills with vertical rotor shaft, e.g. combined with sifting devices with beaters rigidly connected to the rotor the material to be crushed being thrown against an anvil or impact plate
    • B02C13/1835—Disintegrating by mills having rotary beater elements ; Hammer mills with vertical rotor shaft, e.g. combined with sifting devices with beaters rigidly connected to the rotor the material to be crushed being thrown against an anvil or impact plate by means of beater or impeller elements fixed in between an upper and lower rotor disc
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C19/00—Other disintegrating devices or methods
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C13/00—Disintegrating by mills having rotary beater elements ; Hammer mills
    • B02C13/14—Disintegrating by mills having rotary beater elements ; Hammer mills with vertical rotor shaft, e.g. combined with sifting devices
    • B02C13/18—Disintegrating by mills having rotary beater elements ; Hammer mills with vertical rotor shaft, e.g. combined with sifting devices with beaters rigidly connected to the rotor
    • B02C13/1807—Disintegrating by mills having rotary beater elements ; Hammer mills with vertical rotor shaft, e.g. combined with sifting devices with beaters rigidly connected to the rotor the material to be crushed being thrown against an anvil or impact plate
    • B02C2013/1885—Disintegrating by mills having rotary beater elements ; Hammer mills with vertical rotor shaft, e.g. combined with sifting devices with beaters rigidly connected to the rotor the material to be crushed being thrown against an anvil or impact plate of dead bed type

Definitions

  • the present invention relates to apparatus and method of breaking pieces of solid mineral material comprising the features of the preamble of claims 1 and 2, respectively.
  • fragments of solid mineral material is heaped up to encircle a rotor, and the rotor is made to rotate to throw pieces of solid mineral material to the heap or "dead bed” of fragments. Then, these pieces of solid mineral material strike the "dead bed” to reduce to fragments, which are allowed to fall from the space between the rotor and the breaking chamber. After leaving the lower part of the breaking apparatus the fragments of solid mineral material are sorted according to size.
  • breaking force available in such a breaking apparatus will depend on the force with which pieces of solid mineral material can strike against the "dead bed”, and as a matter of course, the breaking effect increases with the striking force.
  • the "dead bed”, however, will be covered thick with fragments of relatively small size because collision takes place on the surface of the "dead bed”. Therefore, pieces of solid mineral material when thrown at the "dead bed” are likely to land soft on the "dead bed", thereby causing thrown pieces of solid mineral material to lose their kinetic energy, which otherwise, would be used to break pieces of solid mineral material into fragments.
  • the object of the present invention is to provide a solid mineral material breaking apparatus and a method which can make full use of the kinetic energy of thrown pieces of mineral material in breaking themselves in fragments, thereby substantially increasing the breaking efficiency and sorting fragments of solid mineral material according to size.
  • centrifugal breaking apparatus comprising the features of claim 1.
  • the breaking apparatus and method just described the "dead bed” is subjected to vibration to cause fragments of relatively large size to come up on the surface of the "dead bed”, and therefore, pieces of solid mineral material when thrown to the "dead bed", will strike against relatively large fragments on the surface of the "dead bed” so that the kinetic energy of the flying pieces of solid mineral material may be fully used in breaking themselves into fragments.
  • the breaking efficiency will be substantially increased.
  • fragment-sorting method in combination with such a breaking method just described in which fragment-sorting method a separator plate is provided on the course on which fragments of solid mineral material fall from the "dead bed", and when the "dead bed” is subjected to vibration, fragments of relatively large size will come up on the surface of the "dead bed” to permit these fragments of relatively large size to fall inside and fragments of relatively small size to fall outside of the separator plate.
  • fragment-sorting method in combination with such a breaking method as described above in which fragment-sortering method an outlet is provided in the vicinity of the "dead bed", and when the "dead bed” is subjected to vibration, fragments of relatively large size will come up on the surface of the "dead bed” to leave fragments of relatively small size inside and fall from the outlet.
  • fragments of relatively large size which come up on the surface of the "dead bed” as a result of vibration, will be automatically selected and removed as separate from fragments of relatively small size, which are left inside the "dead bed” as a result of the vibration.
  • Fig. 1 shows a centrifugal breaking apparatus according to one embodiment of the present invention as including a rotor 1 in a breaking chamber 2.
  • the rotor 1 is designed to be driven at an increased speed by an associated motor (not shown).
  • a hopper is arranged above the rotor 1 to supply pieces of solid mineral material along the axle of the rotor, thereby permitting the rotor 1 when rotating at an increased speed to throw pieces of solid mineral material from its radial outlets in tangential directions to cause pieces of solid mineral material to strike against the "dead bed" 3 of fragments of solid mineral material which encircles the rotor 1. Then, the pieces of solid mineral material reduce to fragments.
  • the centrifugal breaking apparatus has lower and upper frame sections 6a and 6b coupled together.
  • the breaking chamber 2 is built in the upper frame section 6b.
  • the hopper (not shown) is connected to the top of the upper frame section 6b to supply pieces of solid mineral material along the axle of the rotor 1 as described above.
  • the lower frame section 6a has an outlet 11 at the center of the bottom of the lower frame section, an annular opening 12 encircling the outlet 11 and a chute 13 to collect fragments of solid mineral material falling from the annular opening 12.
  • the breaking chamber 2 of the upper frame section 6b is open at its bottom floor, and the opening of the bottom floor is encircled by a cylindrical wall.
  • the breaking chamber 2 has an annular support box 4 connected to its undersurface.
  • the annular support box 4 is resiliently supported by springs 15 as indicated at the lower frame section 6a, thus preventing transmission of vibration to the lower frame section 6a.
  • the support box 4 is connected to a vibrator 5, which comprises a motor and an associated eccentric cam to vibrate the "dead bed" vertically.
  • the support box 4 is also connected to the upper and lower frame sections 6b and 6a by flexible material such as rubber plates 7, thereby permitting the vertical vibration of the annular box 4.
  • the lower frame section 6a has a cylindrical separator 8 arranged coaxial with the lower frame section.
  • Fig. 2 shows the relationship between the fragment size and the weight of fragments of diffferent sizes.
  • Curve 1 shows the result of a conventional centrifugal breaking system using no vibration whereas curves 2 shows the results of a centrifugal breaking system using vibration according to the present invention.
  • Taff having been supplied to the rotor, particulars of the experiments are as follows: Feeding rate of pieces of solid mineral material 40t/h Circumferential speed of the rotor 55m/sec Amplitude of the vibration of the support box 2. 5mm Frequency of vibration 58Hz
  • the rate of fragments of relatively small size is large in a centrifugal breaking apparatus using vibration according to the present invention, compared with a conventional centrifugal breaking apparatus using no vibration. This shows that pieces of solid mineral material reduce to fragments at an increased efficiency in the centrifugal breaking apparatus using vibration according to the present invention.
  • This particular embodiment uses a cylindrical separator to separate fragments of solid mineral material according to size.
  • an outlet may be provided to the support box or the side wall of the breaking chamber to allow fragments of relatively small size to leave the "dead bed” while fragments of relatively large size slide and roll on the slant of the "dead bed” to fall in the center hollow space of the centrifugal breaking apparatus. If occasions demand, a net may be applied to the outlet of the breaking apparatus, thereby screening fragments of solid mineral material.
  • This particular embodiment uses a support box as vibrating means.
  • the breaking chamber, the upper frame section having a braking chamber, or the framework itself may be designed to vibrate.
  • a motor for driving the rotor is fixed to the framework so as to vibrate together while rotating the rotor.

Landscapes

  • Engineering & Computer Science (AREA)
  • Food Science & Technology (AREA)
  • Crushing And Pulverization Processes (AREA)
  • Disintegrating Or Milling (AREA)
  • Combined Means For Separation Of Solids (AREA)

Claims (2)

  1. Zentrifugalbrechvorrichtung mit einem in einer Brechkammer (2) angeordneten hohlen Beschleunigungs-Rotor (1) und einem Fülltrichter zum Einbringen von Stücken von Mineralfeststoff in den Rotor (1) und längs dessen Längsachse, um dabei den Rotor (1), wenn er mit erhöhter (hoher) Drehzahl rotiert, die Mineralfeststoffstücke über im Rotor (1) vorgesehene radiale Auslässe in tangentialen Richtungen herausschleudern und die Mineralfeststoffstücke auf ein den Rotor (1) umgebendes "Totbett" (3) aus Fragmenten bzw. Bruchstücken des Mineralfeststoffs auftreffen zu lassen und dadurch die Mineralfeststoffstücke zu Fragmenten zu zerkleinern, dadurch gekennzeichnet, daß
    ein Lagerkasten (4) und ein Rüttler (5) dem "Totbett" (3) in der den Rotor (1) umgebenden Brechkammer (2) betrieblich oder wirkungsmäßig zugeordnet sind, die Brechkammer (2) einer oberen Rahmensektion (6b) der Kammer (2) bodenseitig offen ist, so daß Fragmente des Mineral(fest)stoffs sich unter Bildung des "Totbetts" (3) an der Oberseite des Lagerkastens (4) ansammeln können, der Lagerkasten (4) durch flexible Platten (7) gegenüber der oberen Rahmensektion (6b) und einer unteren Rahmensektion (6a) isoliert ist, so daß die Fragmente des Mineral(fest)stoffs mit Schwingung beaufschlagt werden, wenn der Lagerkasten (4) in Schwingung versetzt wird, und die Fragmente des Mineral(fest)stoffs unter dem Einfluß der Schwingung getrennt werden, und die Zentrifugalbrechvorrichtung ferner eine lotrecht längs der Strecke, auf welcher die Fragmente des Mineralfeststoffs aus dem "Totbett" (3) herabfallen, angeordnete Scheiderplatte (8) umfaßt, wodurch die herabfallenden Fragmente des Mineralfeststoffs nach Größe sortiert werden.
  2. Verfahren zum Zerkleinern bzw. Aufbrechen von Mineralfeststoffstücken und zum Sortieren von Fragmenten bzw. Bruchstücken nach Größe mittels der Zentrifugalbrechvorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß das "Totbett" (3) der Fragmente des Mineralfeststoffs bei der Schwingung des Lagerkastens (4) mit Schwingung beaufschlagt wird und (dabei) Fragmente einer vergleichsweise kleinen Größe zur unteren Schicht des "Totbetts" (3) verlagert werden, so daß diese vergleichsweise kleinen Fragmente zur Außenseite der Scheiderplatte (8) herabfallen können, während Fragmente einer vergleichsweise großen Größe zur oberen Schicht des "Totbetts" (3) verlagert werden, so daß diese vergleichsweise großen Fragmente zur Innenseite der Scheiderplatte (8) herabfallen können und damit die Mineralfeststoffstücke nach ihrem Teilchendurchmesser getrennt (bzw. klassiert) werden können.
EP89104643A 1988-12-05 1989-03-15 Vorrichtung und Verfahren zum Zerkleinern von Mineralfeststoffen in kleine Teilchen und Verfahren zum Sortieren von Mineralfeststoffteilchen nach Grösse Expired - Lifetime EP0372149B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP63308501A JPH0783837B2 (ja) 1988-12-05 1988-12-05 遠心破砕機とその破砕方法及び破砕片の仕分け方法
JP308501/88 1988-12-05

Publications (3)

Publication Number Publication Date
EP0372149A2 EP0372149A2 (de) 1990-06-13
EP0372149A3 EP0372149A3 (de) 1991-01-23
EP0372149B1 true EP0372149B1 (de) 1994-08-17

Family

ID=17981776

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89104643A Expired - Lifetime EP0372149B1 (de) 1988-12-05 1989-03-15 Vorrichtung und Verfahren zum Zerkleinern von Mineralfeststoffen in kleine Teilchen und Verfahren zum Sortieren von Mineralfeststoffteilchen nach Grösse

Country Status (9)

Country Link
EP (1) EP0372149B1 (de)
JP (1) JPH0783837B2 (de)
KR (1) KR930009716B1 (de)
AT (1) ATE110008T1 (de)
AU (1) AU620600B2 (de)
DE (2) DE68917566T2 (de)
ES (1) ES2017447T3 (de)
NZ (1) NZ228547A (de)
ZA (1) ZA893124B (de)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5145118A (en) * 1990-08-29 1992-09-08 Canada Larry D Centrifugal impactor for crushing rocks
CN101745970B (zh) * 2009-12-11 2013-02-06 武汉理工大学 整形的陶瓷原料粉体制备方法和所用振捣整形装置
CN108906227B (zh) * 2018-07-05 2023-09-19 福建南方路面机械股份有限公司 一种立轴式破碎机及其破碎方法
CN113289725B (zh) * 2021-05-18 2022-09-13 华能云南滇东能源有限责任公司 一种环保无烟煤处理装置
CN113399030B (zh) * 2021-06-15 2023-06-13 南京华云新工程科技有限公司 一种药房用药剂碾磨收集设备
CN114086009B (zh) * 2021-10-26 2022-06-21 辽宁科技学院 一种过共晶铝硅合金生产装置及其工艺

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU498906B2 (en) * 1976-12-24 1979-03-29 Iowa Manufacturing Co. Impact crusher
DE2808350C2 (de) * 1978-02-27 1983-10-27 Alb. Klein Kg, 5241 Niederfischbach Vorrichtung zum Aufbereiten von Sandknollen-Gemischen
JPS58186448A (ja) * 1982-04-27 1983-10-31 コトブキ技研工業株式会社 遠心破砕機のデツドベツドの破砕片を回収する方法並びにその装置
NZ213510A (en) * 1985-09-17 1989-02-24 Barmac Ass Ltd Mineral breaking by cyclonic action and separation of fines
AT390568B (de) * 1986-10-30 1990-05-25 Wageneder Sbm Gmbh Prallmuehle zum zerkleinern von gestein od. dgl.
FR2610217B1 (fr) * 1987-01-30 1991-08-16 Alsthom Concasseur rotatif a aubes de projection autoprotegees

Also Published As

Publication number Publication date
NZ228547A (en) 1991-12-23
DE68917566D1 (de) 1994-09-22
JPH0783837B2 (ja) 1995-09-13
ATE110008T1 (de) 1994-09-15
EP0372149A3 (de) 1991-01-23
AU3252789A (en) 1990-06-07
ES2017447T3 (es) 1994-10-16
KR900009141A (ko) 1990-07-02
DE372149T1 (de) 1990-12-20
ZA893124B (en) 1989-12-27
JPH02152558A (ja) 1990-06-12
DE68917566T2 (de) 1995-01-12
AU620600B2 (en) 1992-02-20
KR930009716B1 (ko) 1993-10-09
EP0372149A2 (de) 1990-06-13
ES2017447A4 (es) 1991-02-16

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